renderExtraColumn seems to fail sometimes after reconfigure is called on the grid 4.2 now. It creates the header fine but the first column is missing so all the columns are shifted one over. If I scroll up and down it fixes itself.

There is a little bug with date filter.
If you have null/empty date value in the store, during the application of the filter an error will occur:
"Uncaught TypeError: Cannot call method 'getTime' of null"

This can be easily corrected adding a if control before the applyFilters method (FilterBar.js, 666 row) return the item.

That's probably the same problem reported in the message #134 in this thread (look at the previous page): you probably need to tweak a few lines in the source where there is a call to the function getGridColumns(true): simply remove the argument and it should work.

I have a similar problem as mpete, i can´t populate my comboboxes when the grid store is set to "remoteFilter: true". Should i create a separate store for each combo? I'm just getting started in extjs 4, any example would be appreciated.

Initial filters on non-visible columns ignored

I had an issue where there was a filter applied to my grid store on a column that is not displayed in the grid. The FilterBar plugin was ignoring this initial filter because of this line in the parseInitialFilters() function:

this should solve the problem with hidden columns and filters initially shown

2) applyFilters
i disabled delay for filters triggered by RETURN Key (also for remote loading).
Formerly i do not used change event, but this way it works quite well.
I think delaying during typing is ok, but you do not want to wait using RETURN KEY

3) Info's / debud output on things that corrupts MixedCollections on duplicate keys:
parseFiltersConfig:...
generally i changed the default behavior that each column will have a autoFilter.
If i do not want a column filtered, i have to add filter: false.
Using Sencha Architect this is more comfortabel, because i do not have to add a custom config property for each column!

Leonardo, any chance of putting a version of the plugin on some public versionated site, such as github or bitbucket, where contributions like Holger's, and in general simple fixes, would be simpler to track?